diff --git a/lib_dec/ivas_stereo_dft_dec_fx.c b/lib_dec/ivas_stereo_dft_dec_fx.c
index 914c7fad17b255839f68fe1cfd598a15caef587a..11f266d2ea8b0b5c99e9ef9143d4b4a09ba6a7e4 100644
--- a/lib_dec/ivas_stereo_dft_dec_fx.c
+++ b/lib_dec/ivas_stereo_dft_dec_fx.c
@@ -2608,7 +2608,7 @@ void stereo_dft_dec_fx(
                     q_cna_level = hFdCngDec->smoothed_psd_exp;
                     move16();
                     l_tmp = Sqrt32( cna_level, &q_cna_level );
-                    scale_fact = Mpy_32_32( l_tmp, scale_fact0 ); /* q_cna_level */
+                    scale_fact = Mpy_32_32( l_tmp, scale_fact0 ); /* Q = (31-q_cna_level) + Q15 - 31 */
                     /*
                        scale_fact0 will be in Q15 by the time the above operation is performed
                        so the q of scale_fact represented now by q_cna_level has to be updated
@@ -2628,12 +2628,12 @@ void stereo_dft_dec_fx(
                     l_tmp = L_add( Madd_32_16( N1, N1, g ), Mpy_32_16_1( N2, gamma ) ); /* q_cna_level */
                     l_tmp = L_shr( l_tmp, sub( q_cna_level, hStereoDft->q_dft ) );      /* q_dft */
 #endif                                                                        /* OPT_STEREO_32KBPS_V1 */
-                    DFT_L[2 * i] = L_add( DFT_L[2 * i], l_tmp );              /* q_dft */
+                    DFT_L[2 * i] = L_add_sat( DFT_L[2 * i], l_tmp );          /* q_dft */
                     move32();
 #ifdef OPT_STEREO_32KBPS_V1
                     l_tmp = Msub_32_16( Msub_32_16( N1, N1, g ), N2, gamma ); /* q_cna_level */
                     l_tmp = L_shr( l_tmp, shift );                            /* q_dft */
-                    DFT_R[2 * i] = L_add( DFT_R[2 * i], l_tmp );              /* q_dft */
+                    DFT_R[2 * i] = L_add_sat( DFT_R[2 * i], l_tmp );          /* q_dft */
 #else                                                                         /* OPT_STEREO_32KBPS_V1 */
                     l_tmp = L_sub( Msub_32_16( N1, N1, g ), Mpy_32_16_1( N2, gamma ) ); /* q_cna_level */
                     l_tmp = L_shr( l_tmp, sub( q_cna_level, hStereoDft->q_dft ) );      /* q_dft */
@@ -2646,11 +2646,11 @@ void stereo_dft_dec_fx(
 #ifdef OPT_STEREO_32KBPS_V1
                     l_tmp = Madd_32_16( Madd_32_16( N1, N1, g ), N2, gamma ); /* q_cna_level */
                     l_tmp = L_shr( l_tmp, shift );                            /* q_dft */
-                    DFT_L[2 * i + 1] = L_add( DFT_L[2 * i + 1], l_tmp );      /* q_dft */
+                    DFT_L[2 * i + 1] = L_add_sat( DFT_L[2 * i + 1], l_tmp );  /* q_dft */
                     move32();
                     l_tmp = Msub_32_16( Msub_32_16( N1, N1, g ), N2, gamma ); /* q_cna_level */
                     l_tmp = L_shr( l_tmp, shift );                            /* q_dft */
-                    DFT_R[2 * i + 1] = L_add( DFT_R[2 * i + 1], l_tmp );      /* q_dft */
+                    DFT_R[2 * i + 1] = L_add_sat( DFT_R[2 * i + 1], l_tmp );  /* q_dft */
                     move32();
 #else  /* OPT_STEREO_32KBPS_V1 */
                     l_tmp = L_add( Madd_32_16( N1, N1, g ), Mpy_32_16_1( N2, gamma ) ); /* q_cna_level */